So I decided to try to fab one up myself. I used an old car license plate, and a fiberglass repair kit from Walmart. 1st I wrapped the license plate around the battery like so. Then started putting layers of fiberglass around it. The fiberglass does 2 things. Gives the license plate strength and helps with the heat a little. I then sanded the rough edges of the fiberglass down.




After the fiberglass set I refitted the battery to make sure I was good to go.



I then drilled holes, bolted it up, and riveted a strap that goes to the lower header bolt for added strength.



I'll put some heat shielding on next.


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Duckhunter.....or duckhumper as I affectionately call him, has these made out of genuine carbon fiber.

I know you put some work into this but its worth a pm to him.

I think Duckie is using a different than stock battery (not a lightweight lithium but a physically smaller lead/acid Yuasa)? Not 100% sure though so a pm would clarify any questions...

Is it ok to turn a gel batt on the side

Didn't he say he put a YTZ-7S?

Thanks for remembering me Madbuyer

Yes I had them made from carbon and a few other things as well.
I still have two ready to go.




Yes Nobody, I am using the YTZ7S Yuasa battery turned on its side.
I am just holding off on the new design right now.
Just had to sheel out huge coin on vet bills last week so everything is on hold with the rc.







I have yet to have a problem doing it. The oem battery sits laid down in the subframe on the rc.

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Its all good. Not a whole lot but I'd still possibly be interested in a cf one.

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Would you consider a smaller battery, That will still start the RC-51??
And what it be worth ? ? .
Smaller, Lighter(2.4lbs.)

Sorry-I lied... 1 lb. 9.1oz.

Yes J'Dog.. The YTZ7s battery was a recommend from RogueRC51.
12YTZ12s is like 9 lbs, were you loose nearly 3lb with the YTZ7s.(wieght in third photo)
And with the home made 8 cell battery, That a fine motorcycle enthusiast fabricated for me. You can loose nearly 7 lbs.
And if there is a interest.
I will post the little battery, crank the 2003 RC-51..

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Chaos- I gotta say, I love you man! In a Bud Light sort of way.
I wouldn't put much confidence in a 7S. Yeah I know it's lighter, by almost half, than the 14S I'm running, but I want cranking power. I'll pay 4lbs. for it.
Now if you're talking Shorai, for only $20 - $40 more, that's the ticket for these undertrays. And now that I've looked up the specs, on paper the Shorai is a no-brainer.

Shorai LFX18A1-BS12 - 2.3lbs. - 270 CCA (Cold Cranking Amps)

Yuasa YTZ7S - 4.6lbs. - 130 CCA

Yuasa YTZ12S - (OEM) 8.1lbs. - 210 CCA

Yuasa YTZ14S - 8.6lbs. - 230 CCA

The Shorai is actually the more economical battery when you look at the CCA's, weight, lifespan, and resilience for sitting.
The only problem is, I've seen 2 reports on our forum of these batteries frying and exploding in the battery tray. Rare. Maybe failing regulators/rectifiers as admitted in one case?