Triumph Hurricane (TRIX75) - Investigating Rough Running - Part 3 - Reinstall carbs/brake cable

With the carbs rebuilt, let's get them back on and test and also fit a new front brake cable to improve the action of the brake. Nothing ever goes that smoothly does it?
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[@Segsy59]

Thanks for using the camera stand to give us a view of an honest cold start , good work Angus.

[@BSAPowerSet]

Thank you and for reminding me to use it!

[@davefrench3608]

That styling still holds up, a beautiful bike

[@BSAPowerSet]

Agreed Dave.

[@howardosborne8647]

Timeless styling👌....it never gets old.

[@matthewharmer1656]

Looking good.

[@54macdog]

Make him an offer, Angus. That is a very fine machine.

[@BSAPowerSet]

Mac! Stop it! Lol

[@rvdvogt]

Very nice!

[@howardosborne8647]

Good job,Angus. This is a vast improvement from how the slow running was originally. Your thoughts on the pilot jet being overbored would be worth further investigation but overall it is running pretty sweet now👌

[@BSAPowerSet]

Many thanks Howard for the kind comment.

[@DaveFiggley]

She's a beauty. Doesn't sound particulary 'tappety' with 6 and 8 gaps. The Triumph twins ran 2 and 4 thou clearances and were no quieter than that. 'Nothing ever goes smoothly does it?' lol. No, it doesn't!

[@BSAPowerSet]

Thanks for the interest and comment Dave. Yes she sounds fine mechanically and we're getting there with the carbs after anything but smoothness as always.

[@keithwhiting6569]

I've heard of people boring out the pilot bush jets behind the air screw and fitting a screw in jet to the main body as in the older amals re your 2 turns out air screw re No1 carb, certainly on the 930 type carbs as they said they get blocked probably from being parked up for very long periods of time 🙄 No 78 or 0.016"drill is the jobie to check the jet size. Have fun !

[@BSAPowerSet]

Thanks Keith and for confirming No 78 drill bit. Oh yes hours and hours of endless fun!

[@stephencox4224]

I seem to remember back in the day if you did not get the works type triple disk brake setup another option I believe from memory was to modify the original conical hub drun brakes to take Mini wheel cylinders add a master cylinder and convert to hydraulic drum brake setup, I suppose it was a bit like using the Cooper S pressure plate in the triple clutch another option back then just like upgrading the oil cooler with a Cooper S Oil cooler My old boss still has his Hurricane beautiful style back in the day and even more so these days

[@BSAPowerSet]

Thanks for the interest and comment Stephen. Conical hub drums were originally designed to be hydraulic and as you say some owners did convert them even though the factory didn’t fit some reason go that route.

[@stephencox4224]

@@BSAPowerSet Considering the economic circunstances of the factory back then I think all efforts were on the sadly aborted 350 twins all else being of secondary concern, Pity they did not take the approach proven so sucessful later in the 1970's with Harley Davidson whereby they allowed the management and workers to be shareholders invested personally in the Company and it's future that could have been a much better outcome for all

[@BSAPowerSet]

@@stephencox4224 Reading some texts from factory workers they would argue that not enough time was being spent on the 350s! The factory was just so stretched trying to implement all the mods across the range for '71 hence them beginning production 5 months late. Interesting re workers shares - like the Meriden Co-op.

[@robertcameron5007steelwheel]

That model had the bsa motor.

[@BSAPowerSet]

Indeed Robert - in fact the Hurricane was styled by Craig Vetter based upon a complete BSA Rocket Three that he was given by the US distributor. Thanks for the comment and interest.

[@jimclarke1108]

Great sound as well

[@BSAPowerSet]

Yes she does sound well Jim. Thanks for the comment and interest.

[@stewy62]

Certainly she started easily enough and the engine sounded good, another enjoyable video !

[@BSAPowerSet]

Many thanks Stewart.

[@rvdvogt]

But we all now that the air screw will NOT get the engine to run okay!! Just synchronize them!!

[@BSAPowerSet]

I have syn’d them as well - just using the air screw for tuning low end and tickover. Thanks for the interest and comment.

[@p--n]

What are your thoughts on extending the front brake arms for added leverage?

[@BSAPowerSet]

Hello Paul. I’ve never ridden a bike with them fitted but technically they should improve braking if the brake shoes are properly bedded in and if the verniers are properly adjusted with the correct cable installed although as a percentage increase I couldn’t even begin to estimate. Thanks for the interest and comment.

[@nickmarshall9192]

I have done it I found 3/4" too much and 1/2" extension was ok Set the adjustment up so the shoes are just touching when the lever is fully out The lever will feel more spongy coming all the way back to the bars but will work much more powerfully And as soon as you've used the brake the hub will heat up and you'll get no more drag from the shoes This has been my experience anyway

[@bananabrooks3836]

Obviously not sufficiently road tested by the builder after the 'restoration' a show not go job? All these small but not insignificant faults would not fill the owner with confidence if l were they. I know camera mics pick up odd noises thought the primary chain was slack but watching to the end that left hand carb not pulling its weight was probably making the bottom end sound clacky.

[@p--n]

Sounds like there's a market for brake arms extended by 1/2".

[@BSAPowerSet]

@@bananabrooks3836 Thanks for the interest and comment. Yes the bike hasn't been bedded in since the restore - Chris noticed the running problems and has been looking for someone to investigate. Thanks for mentioning the noises - I didn't notice any primary chain noise, just the LH pot bogging down as you describe. Easy enough to check the chain anyhow.