Dirt bike starter Fix - 24 volt system

This 24V system could be adapted to almost any dirt bike model. However, this video specifically applies to 2018 and 2019 Gas Gas models as well as 2021 and 2022 Rieju models.
Antigravity ATZ-7 Restart battery: amzn.to/3xhiw0E
Antigravity 4Cell Battery: amzn.to/45kWztW
Please see the Thumpertalk Forum for guidance on why your system may not be working. thumpertalk.com/forums/topic/...
The 24V starter system is the LAST step. Do not do this if you have not gone through all the issues outlined in the above Forum.
Sending 24v to your starter is a very simple setup but please attempt at your own risk.

[@TGM_Offroad]

Just did this to mine, same battery set up as you and it starts sooooo much better now

[@donluc007]

Very useful, good job for designing the system, thanks for sharing!

[@Krasim765]

Man that's such a smart setup......I've just got my first 2018 EC300 and it's had a hard life so I've got a list of work to do but after I get it running, this is definitely a mod that I'm gonna do - good job mate !

[@drew7224]

Thanks! Good luck and let me know how it works for you.

[@rafy600]

How you connect the charger to the 2 battery. Negative to Negative and positive to positive or you have to switch them. Mine secondary battery doesn't charge when I connect to the charger. Thanks in advance

[@andrewjudy1136]

Thank you. Thank you. Thank you. 👍👍👍

[@drew7224]

Did you try a similar setup on your bike?

[@andrewjudy1136]

@@drew7224 I borrowed a battery out of my beta and mocked up a similar set up. It cranked the bike over with ease. Ordered the exact antigravity set up you have on yours. Batteries are supposed to arrive in the mail today.

[@foil666]

I'm thinking about doing this to my bike. Currently have the 410 starter, but whenever it doesn't start within a couple of turns, then it won't go with the e Start at all. One addition that could be made is to wire the main battery to the starter battery with a couple of diodes - that way it'll charge, but still be isolated the other way around.

[@drew7224]

I thought about doing something like this but I just don't have the electrical knowledge to go through with it. With my setup, I trickle charge once a month or so riding every weekend. That is doable for me.

[@foil666]

@@drew7224 I ended up going to easier route as well - since mine already had a second ground wire to the regular battery, I just used that to jump the starter battery to the relay. Tried a cheap LCA at first in the same location as yours, but lithium is definitely the way to go. All the starting current needs to be grounded through the main battery and a small LCA has way too much internal resistance. One thing that can happen is that the relay might stick with prolonged use. Mine got stuck while I was testing the system and came back to life with some love taps. I've replaced it as well (china 10€ special).

[@patpaluch9842]

Hey, great video and clean setup! Can you share what fuse did you put on the starter positive wire? I can't find this info anywhere.

[@drew7224]

I do not have a fuse between the starter battery positive terminal and the starter itself. It is only active when the relay is closed (pressing the starter button) which is on it's own fuse. The fuse you see in the video marked 'starter' is for the trickle charger.

[@patpaluch9842]

Thanks. For anyone else interested for safety reasons I put a fuse on the positive terminal and I used 40A. I started with 20A and it worked but would get burnt if motor needed to crank longer than a second, I tried 30 and that allowed to crank for longer but still burnt so I settled for 40A and it’s perfect and allows to crank over and over but if there ever is a short on the motor it will burn out and prevent electrical fire.

[@NitchGaming]

Will this mod not burn accessory wire for 24 volts momentary

[@drew7224]

The way I have it wired, the 24V is direct from relay to starter. There is only 24v when the starter button is pressed. There should not be any accessories that get power only when the starter button is pressed.

[@emis.2217]

Cool mod , so let me understand main battery is wired normal as it`s should , and the second battery from the solonoit now gose to the - negative and the positive to the second battery goes to the starter ? Right ?

[@foil666]

second battery negative to starter solenoid and positive to starter.

[@drew7224]

Yep, that is how I have mine set up.

[@unholypally]

Were there a lot of issues with the E start before you did this? I’m thinking about picking one of these up, one with like 100 hours but I def want something with reliable E start so if that’s an issue on these I may stay with a KTM/Husqvarna

[@nils8485]

Yep, there are a lot of issues, I also had to fight with it but there are multiple fixing options out there these days and if you fixed it you will be a happy owner of a bike which is so much better than the KTM stuff. You will be blown away by the suspension and if you give it to an expert you can bring it to a level of what WP 3000$ stuff might not even keep up with. Those bikes are definitely an upgrade.

[@drew7224]

I agree with Nils. I haven't heard of a 2018-2019 GasGas that didn't have starter issues. The good news is there are very well documented fixes and they work well. For the price of this bike you cannot get a better one. I love everything about this bike.

[@unholypally]

@@drew7224 I did end up grabbing one. Already have gone through some of the starter things and done some preventative maintenance/mods, and its been working great so far, even worked pretty well before I touched it. So far I love the bike and am glad I made the choice to get it, and I've yet to ride it on the kind of gnarly stuff it was made for!

[@muharremaltinkaynak6557]

İ Smoke the selenoid relay twice this connections??

[@drew7224]

If you are smoking your solenoid with this setup you either have it wired wrong or do not have a proper sized fuse on your relay.

[@carlosgijon7047]

How is it holding up now ? Still working strong ? Thanks in advance.

[@drew7224]

I have 50 hours on it since the 24v system upgrade and its been working flawlessly.

[@ShawnBlais]

Curious how long you can go between charges on the starter battery?

[@drew7224]

I have not pushed it to the limits. I think the most I have gone is 2 or 3 weeks of weekend trail rides. I typically plug in a trickle charger after every ride. I have done hard core all day races with 50+ starts in a day with no problems.

[@ShawnBlais]

@@drew7224 I've since installed one myself . I'd say I get 6-8hrs of riding, probably 100+ starts? That's in the winter, when we stop a lot more, probably in the summer, closer to 15hrs+? One of the best mods I ever made, thx for the knowledge! I ended up using 1 full size AG battery + the 4 cell, the rubber strap can wrap around both, with the smaller one on the outside of the box. Holds it nice and tight. I use the fullsize as the secondary.

[@ktmkaos]

This will eventually brake your woodruff key

[@drew7224]

I've got 50 hours on the bike since this upgrade. Hundreds of starts. No issues so far and I recently inspected all starter components. 🤷 Definitely better than having a bike that wont start.

[@pringles5070]

Nice Work... Are you not doing mining these days???

[@drew7224]

Unfortunately, not much mining for me anymore.