Tomos 74cc 20HP+ capable CNC clutch install

After a month my parcel from Slovenia finally came in. The clutch housing can take 20hp+ and in this video I installed it and took it for a test ride. Like always with this project, I fix something and during the testing I destroy something else...

[@zokky7]

nekad davno kada sam bio mlad, obožavao sam šarafiti, a sada samo gas 😁 odličan video 👍

[@roehle9962]

ah yes, just a typical day working on the money annihilation machine :)

[@Tomology]

shut up😂 it's getting out of hand real quick

[@roehle9962]

@@Tomology that mvt is a real gem tho

[@Tomology]

it is and atleast it won't break that easily as other parts do ;)

[@roehle9962]

@@Tomology wait, are you german by any chance? the roads you drive on surely look german 😂

[@Tomology]

nein ich bin ein nachbarn aus holland :) the roads in germany are way more patched up and have more holes in them lol. took two vacation trips with my friends on the tomos a35 there.

[@stefanclemens6482]

Nice...👊🏻

[@Alex-hc4wm]

Dat moment wanneer 1 onderdeel meer waard is dan mijn hele tomos haha

[@keesankerwout3763]

toffe fiets, waar heb je die koppeling gevonden, als ik vragen mag

[@mitjaivacic8948]

I need to know where did you buy kit 74cc and clutch basket and wich carburetor do you use on this engine? Amazing work!

[@alco3036]

frčo moto

[@youneverknow111]

clutch basket is from slovenia judging by box

[@locohefe]

So what caused the initial failure and cracking of the clutch be? I'd guess broken or removed sprag return spring?

[@Tomology]

it's made for a stock 50cc cylinder. putting a 74cc on there with much more power is what's caused the bell to break

[@Harerra6677]

Svaka cast !!!

[@svenvanbeek5487]

Welke keerring heb je gebruikt voor deze cnc koppeling?

[@Tomology]

was vgm 25x35x7. in ieder geval de binnenmaat is groter

[@postaroland2014]

What went wrong with the test? Also, how powerful is the engine in its final configuration?

[@Tomology]

cylinder seize. I guess between 8 and 12 hp

[@default1647]

What is max speed ?

[@joshe2420]

As far as I know and I have tried, the stock tomos shifting is shit, did you do anything to fix it? (to make it possible to shift a lot faster)

[@Tomology]

not anything that I'm aware of. It's not very quick but also not too bad

[@BRITGamingAndComedy]

then you dont know how to shift a manual tomos

[@joshe2420]

@@Tomology yeah I guess either the one I tried shifts very badly and I'm used to semi automatic dirt bikes

[@Tomology]

are you talking about a 4+ speed tomos or an automatic?

[@joshe2420]

@@Tomology it was an apn6s which wasnt modded to a 5 speed, so yes, a 4 speed

[@Richfart]

mis je op de koppeling niet nog een plaat met de 5 bulten richting de seegering? een vriend van mij heeft een 4L blok waar dit er op zit. volgens tomos4l hoort deze hier ook bij.

[@Tomology]

je zou het kunnen doen om nog meer spanning op de koppeling te zetten, maar in mijn geval zijn 6 veren voldoende en werkt de koppeling naar behoren zonder die extra plaat. ik heb twee 4L blokjes gekocht voor dit project en beide kwamen met maar een eindplaat dus of het standaard met twee wordt geleverd zou ik niet zeker weten

[@Tomology]

@Fluffyrabbitstrangler Nijs er gaat genoeg mis hahah. welk probleem bedoel je precies? in het geval van deze koppeling video is het probleem dat het originele huis de kracht echt niet aankan

[@Tomology]

@Fluffyrabbitstrangler Nijs dat was de vorige keer overkomen. aan het einde vd vid heb ik m vast laten lopen. kun je zien in de nieuwe vid!

[@Tomology]

@Fluffyrabbitstrangler Nijs thanks. ik wil graag laten zien wat ik doe idd voor entertainment en daarnaast krijg ik feedback van mensne die er meer verstand van hebben en zo is het soort van educatief voor mezelf en anderen. is ideaal. ik ga zeker op deze manier door. samodel ken ik wel, veel kijkers van me kijken er ook naar aldus google, maar ben zelf geen scooter fan dus kijk het verder niet

[@noahstump24]

Damn boy 2k in 1 dag

[@bartsimpson8616]

beautiful work ! what kind of cylinder is and what piston is that ?

[@Tomology]

74cc puch airsal

[@ambo_1p606]

Top speed?

[@donathan5932]

I have a similar setup but on a 2 speed automatic tomos lx. Also 74cc kit

[@donathan5932]

Did the kit fit stock cause I had to port mine out

[@Tomology]

@@donathan5932 no needed some modifications to fit

[@donathan5932]

@@Tomology did you get the tomos with the 5 speed transmission from factory or had to convert it because it’s very hard to find the manual tomos in the USA

[@Tomology]

@@donathan5932 here in the Netherlands we mostly have the auto a35 ones. tomos mopeds from the 60's-80's have shifter engines and I bought one of those engines and made it fit this newer tomos revival frame. check my 74cc build vid. it requires you to completely weld a new engine mount and bigger swingarm tho so it's not that easy. but cool you're from the usa! mopeds aren't very common over there right?

[@someone-gb2ec]

Pol premal podložk na zobnikih?🤔

[@dreadknot2238]

Imagine you forgot one piece and u had to start all over

[@hellhound320]

Which model is it, I know they mainly used APN engines on variety of models but this one looks to me a little bit different.

[@Tomology]

it's a tomos 4l engine (apn in slovenia) and a tomos revival frame but heavily customized. I'll make more vids about the build soon

[@hellhound320]

@@Tomology Do people in Slovenia ride Tomos casually even today? Here in Serbia we still have a lot of them usually A3 and APN4/APN6. Those legends are part of our culture in my opinion.

[@Tomology]

@@hellhound320 I don't know, I'm from the Netherlands :) over here are mostly a35 variants and some newer types like the flexer

[@nejclipar]

do you know is there a diference betwen the 6 volt wiring and 12 v wiring on apn6?

[@tjastjas8498]

Ni razlike, lahko na 12v elektriko montiraš 6v napeljavo, edina razlika je da ima nova 12v napeljava še več kablov ta smernike in regulator napetosti itd

[@someone-gb2ec]

Bolš sveti luč na 12V 😉

[@mspudic75]

You forgot to change the gearshift !!! This one is in bad shape. You forgot to check the play on the engine crankshaft when you put it in the case. They did not set the distances between the axle and the bearing in the gearbox (not necessarily), but there is always too much play in the housing. Forgive me for bad English, I forgot because I don't speak it but I fix a lot of Tomos engines.

[@Tomology]

thanks for noticing! I've checked all the clearance stuff when I originally built this engine a few months ago. The gearshift thingy is hard to come by over here but this one will work fine for a while. I'm sure I need to take it apart soon anyway xD

[@jonnyc2.047]

canu seee me a stock tomos i can do the same whith sir times r hard an ineed one an i can t find one sir in the steats

[@gojkoradakovic4457]

Tako sam i ja svog BT-a vise gurao nego vozio!

[@Bbrezo]

nisi imao automatika. uvijek te iznevjeri kad ga najvise trebas

[@mariobogdanov2229]

How much does it cost to build an engine like that

[@Tomology]

a lot

[@anzewrabc4744]

Kje ste kupili kosaro sklopke

[@BozidarPavlicic]

Koji si karburator stavio?

[@Tomology]

21mm phbg

[@theAngelofhevn]

Where did you buy that?! I really need one as im running stock clutch on Reedvalve AJH kit 13000rpm atm :o

[@svenvanbeek5487]

Im planning on using the same cilinder. Is your AJH kit stock or tuned?

[@theAngelofhevn]

@@svenvanbeek5487 Its not stock. Right out of the box it wont run right. Piston will be 3mm down the bore in tdc. So you have to deck the cylinder. Then the porting is not anything special but when you rise the cylinder 3mm it becomes a screamer. I have ported it much. 3rd transfer under reed valve to block, 198° exhaust, 136° transfer timing. Had to grind the top of the piston to get right durations. Im running the bridged exhaust port kit thats a clone of AJH and its widened to around 85% of bore. 😂😁

[@theAngelofhevn]

Pwk 24mm, malossi 4 petal carbon reeds, diy intake and stock Ducati ignition from AM6/Derbi

[@joshe2420]

How did the stock clutch hold up? Might slap the same kit on a 5 speed apn and hopefully I can save 200 euro from the clutch haha

[@theAngelofhevn]

@@joshe2420 Stock clutch holds up just fine! No slip. Im running 6 clutch springs instead of 4. Even if i would do clutch dump in 5th at wot it wont slip. But going over 13000rpm it gets worrying if it would explode 😅 But yeah no problems so far 😁👍

[@neamime4521]

De si naruci taj cilindar

[@Pottunuija]

May I ask why on earth you use L17 bearing?

[@Tomology]

because 6 months ago I wasn't aware of the downsides of L17 bearings. For now they work but I'll replace them in the future with solid ones

[@Pottunuija]

@@Tomology Nice :) That engine is really rough piece of engineering :D I guess blocks made after 80/81 are made with solid bearings

[@Tomology]

something like that yeah. If so, I need to mill down the bearing holes in the casings by 2mm and also ever so slightly remove some material of the crankshaft to make the solid bearings slide-fit. Too much work for now ;)

[@555aljaz]

Whats wrong with L17 bearings ?, they can actually handle more load than regular ones with steel cage.

[@dejanvrg]

I am a bit late,but in new clutch housing goes four clutch plates Malo kasnim ali mislim da u ovo novo zvono kvacila idu cetiri lamele.

[@Tomology]

I don't have a new model clutch so 3 is the max for this one. Works fine too

[@g.g4816]

@@Tomology i made old one fit 4 plates

[@Tomology]

@@g.g4816 It's possible but it greatly increases stress on the outer plate

[@g.g4816]

@@Tomology after half a year, I haven't noticed any abnormal wear and the clutch is much smoother. With the fact that my tomos doesn't have 20 horses 🤣!

[@Tomology]

@@g.g4816 mine hasn't either. it's 'capable' of holding up to 20 horses ;)

[@stefankobus7981]

Tank leeg?

[@Tomology]

was het maar zo'n feest...

[@Markko1986]

What mistake?

[@Tomology]

running lean up top

[@TheOrgonaut]

why not a giladoni cylinder ???

[@Tomology]

At the time it was twice as expensive and I didn't have much experience with tuning kits. So if I blew it up (which I did), it wouldn't hurt as much :)

[@fotisfotakis1623]

Πουμπορω να αγορασω ενα μηχανακι τομος ενα το ιδιο ...φωτηςωτωτακης απο ελλαδα

[@vaiper2023]

Извиняюсь за вопрос: откуда 20HP???

[@Tomology]

read the title... the clutch housing is capable of holding over 20hp

[@vaiper2023]

@@Tomology Excellent durability!

[@nejclipar]

what's the cilinder size on this?

[@Tomology]

74cc

[@nejclipar]

@@Tomologytheanks but like the diameter?

[@Tomology]

@@nejclipar 47mm

[@Yuri_Bodlovic]

what happend?

[@Tomology]

I may or may not ran it too lean up top..

[@matjazkokalj8154]

Živjo, mi lahko prosim razložiš funkcijo luken, kanalov na batu

[@miloshshomymura1448]

Bro..lamela isnt good.. Fins are going in other outer direction.. !! and one more sug.. that is new type housing ..there need to go 4 lamela's not 3.. enjoy 😆 btw nice clean vid ..

[@Tomology]

thanks! clutch plates are the right direction. watch closely to the clip where I put the plates in order and the clip afterwards when I install the circlip, there I used a video clip from my older vid where I did it wrong :). it is the new type housing, but cnc machined and much stronger design and the old type engine with 3 clutch plates which doesn't matter. you can also use this housing for the newer engine types with 4 plates.

[@miloshshomymura1448]

@@Tomology i se it now bro.. Ok :) btw 4 plates new type is stronger :) GG bro

[@marjanglavan9841]

@@Tomology "lamela" 😏🤣

[@Tomology]

@@marjanglavan9841 "clutch plates" ;)

[@marjanglavan9841]

@@Tomology knew 😏. Lamela is on my croatian language and the serbian language the same.😏👍

[@Trafaaa]

Hello 🙂 now its your engine super, pleSe how is your jets? 🙂

[@Tomology]

102 main. ran too rich bottom and mid range and way too lean up top

[@domenfrelih4269]

@@Tomology and what to do at this point? How to make it work perfect?

[@Tomology]

buy a new cylinder and don't make the same mistake again xD

[@domenfrelih4269]

@@Tomology i meant the carb setup, what mistake? Did u ft up your cilinder😂?

[@Tomology]

I'll have a new vid this week explaining what I think is the problem.

[@maremare9515]

Where are you from ❓

[@Tomology]

the Netherlands

[@maremare9515]

Thx. I come from the country where Tomos was produced . . . You have a cool motorcycle . . . I already subscribed to your channel . . . And I'm already looking forward to your posts . . . 🔥👍

[@skraabruh8294]

@@maremare9515 Slowakije

[@VisarLimani]

Why you have changed the clutch? I have similar clutch on my apn.. just with these holes around it.. What about head and piston? If i order one like this, would it work with stock carburator and igonition? Thanks.

[@Tomology]

because the original cluth housing can't handle the power and got completely destroyed. if you buy this cylinderkit you have to upgrade your carb and exhaust. stock will not be good. depends on the ignition, but a stock electronic one should be fine

[@hizgiondofesto5474]

how can that engine produce 20Hp+. in other hand, honda motorcycle with same cubic only produce 6Hp.

[@Tomology]

the clutch housing is rated for 20hp+. right now the engine with stock puch port timing can produce about 12hp or something I'd say, but 20hp is achievable. search up kreidler van veen. those little 50cc racers produce 20hp too

[@texarsplier503]

How much did it cost

[@domenfrelih4269]

122€

[@Tomology]

110 euro plus like 40 shipping

[@Markko1986]

@@Tomology 40e shipping from Slovenia to Netherlands is robery.

[@BRITGamingAndComedy]

@@Tomology you gt scammed i know the person who makes these and he sold it to me for 80 euro so yeah it is good quality but overpriced

[@Tomology]

@@BRITGamingAndComedy I wouldn't call it a scam tho. don't forget the metal prices went up crazy and if I had to let someone else make one for me here in the Netherlands it would be expensive too.

[@nejclipar]

also does bing 12 carburator vork for 74 cc ?

[@Tomology]

too small. 19mm at least is adviced

[@user-id6sp5nd2e]

Apn?

[@Tomology]

apn engine and modified revival frame

[@koalagamer8864]

kaj semering je drugačen ali enake dimenzije kot za original

[@antonio6896]

Tražim za kupiti Tomos Automatic ako tko prodaje...

[@2smokes]

kje si kupil vijake ki držijo skupaj blok in gred?

[@abain5747]

20pk without a reed valve.....

[@Tomology]

love seeing people who can't read titles.... :)

[@abain5747]

@@Tomology ooh i see it.... fake news 😪

[@grgi6478]

Do you have a instagram?

[@Tomology]

I've made an instagram: tomology74