tomos Arrow/E50 build. Gearing is weird. Need suggestions.

I'm currently working on a tomos Arrow that has been modified to accept an E50. I am encountering an issue that my rear puch sprocket is welded to the Arrow wheel in order to be compatible with an E50. Obviously I want peak performance out of this guy, but being bound to my 38 tooth rear I'm not entirely sure what I should run on the front sprocket. Suggestions?

Re: tomos Arrow/E50 build. Gearing is weird. Need suggestions.

Brandon Weiss (Detective brandon to you) /

Which dingus welded a sprocket to the wheel?

Re: tomos Arrow/E50 build. Gearing is weird. Need suggestions.

Chöschi21 C.K. /

Depends what your setup is and what you want out of it.

Re: tomos Arrow/E50 build. Gearing is weird. Need suggestions.

Steel sprocket welded to an aluminum hub?

Post a photo of that

Re: tomos Arrow/E50 build. Gearing is weird. Need suggestions.

Brandon Weiss (Detective brandon to you) /

> Ben Whittle Wrote:

> -------------------------------------------------------

> Steel sprocket welded to an aluminum hub?

>

> Post a photo of that

I assumed he had steel hubbbed spoke wheels, but that would indeed be interesting to see

Re: tomos Arrow/E50 build. Gearing is weird. Need suggestions.

Apearently, Legion. Supposedly it's a raffle bike.

I'm just going off of what a friend has told me about it when he owned it. I cant actually see the weld, but I can't get it off, I've tried. It's not going anywhere.

Re: tomos Arrow/E50 build. Gearing is weird. Need suggestions.

Still working on the complete setup. As of now I have it kitted with a 70cc, case and port matched.

The carb is some Bing clone I grabbed from a buddy as a place holder for the time being and just to get it running, but I would like something bigger. I'm thinking a vm20, with an intake to match, but am open to input

I'd like it to be a match for my A35, which pulls 48.5-50 so I'd at least like it to hit 46-48. Id like to have decent low end but I'm not too concerned about being able to rocket out the gate. I just want to avoid minutes long wind ups just to really get going. I have upgraded the clutch springs and offset the clutch pads (can't think of the correct term, I'm inebriated) to help with acceleration.

In general, I've put in the work, I want a fast bike, but not a drag racer, if that makes sense.

Re: tomos Arrow/E50 build. Gearing is weird. Need suggestions.

The arrow should have a splined rear sprocket held on by a big nut. I would assume the puch sprocket was welded onto the existing tomos sprocket.

Re: tomos Arrow/E50 build. Gearing is weird. Need suggestions.

A decent picture or two of that hub and sprocket , please , so we don't have to speculate .(edited)

Re: tomos Arrow/E50 build. Gearing is weird. Need suggestions.

Overpriced Parts /

18x38 may be a good gearing

On a normal e50 case you can grind a little bit to get a 19 tooth on too

Re: tomos Arrow/E50 build. Gearing is weird. Need suggestions.

The arrow still has the tiny ass wheels? Surely you're not thinking you can gear it like a maxi.

Re: tomos Arrow/E50 build. Gearing is weird. Need suggestions.

Overpriced Parts /

> DPC Ryan Wrote:

> -------------------------------------------------------

> The arrow still has the tiny ass wheels? Surely you're not thinking you

> can gear it like a maxi.

No

Re: tomos Arrow/E50 build. Gearing is weird. Need suggestions.

> Ken Roff Wrote:

> -------------------------------------------------------

> > DPC Ryan Wrote:

>

> > -------------------------------------------------------

>

> > The arrow still has the tiny ass wheels? Surely you're not thinking

> you

>

> > can gear it like a maxi.

>

> No

Has he said this anywhere else? Seems like an assumption.

Re: tomos Arrow/E50 build. Gearing is weird. Need suggestions.

Not trying to gear it like a maxi. Just trying to gear it with what ive got. Like I said, im bound to a 38 on the arrow wheel due to the weld.

Re: tomos Arrow/E50 build. Gearing is weird. Need suggestions.

Well, yes you are. The arrow has a teeny tiny rear gear. You are trying to gear it like a puch, with a larger wheel I.E. Maxi or any other Puch. You will never get that bike to go anywhere fast with a 38 rear on a 12" wheel. Go back to the drawing board. What you are bound to is a bike that will do about 46mph screaming it's nuts off and will still be wailing just trying to cruise in the 30s and burning up a bushing crank unless you change that rear gear.

Re: tomos Arrow/E50 build. Gearing is weird. Need suggestions.

Post a pic of that rear hub/sprocket .

Re: tomos Arrow/E50 build. Gearing is weird. Need suggestions.

Overpriced Parts /

At 19x38 gears and 12 inch wheel you will be at about 45mph @ 9,000 rpm

https://toolbox.martysgarage.info

Re: tomos Arrow/E50 build. Gearing is weird. Need suggestions.

Ryan, there's really nothing wrong with a puch that screams to 45mph. Idk how it is in Florida, if you guys have stop lights or hills, but I rarely even get my motorcycle up to 50mph in the city.

But yeah 19 front sprocket barely fits on an e50, a 20t can fit with some dremeling to the cases. Being stuck with a 38 isn't thay bad honestly. I think tomos front sprocket spline is the same as the rear, and they have 22-31 readily available. Just watch the chain line as it might start to drag on the swing arm pivot.

Re: tomos Arrow/E50 build. Gearing is weird. Need suggestions.

Overpriced Parts /

> Daniel '' Wrote:

> -------------------------------------------------------

> Ryan, there's really nothing wrong with a puch that screams to 45mph.

> Idk how it is in Florida, if you guys have stop lights or hills, but I

> rarely even get my motorcycle up to 50mph in the city.

>

> But yeah 19 front sprocket barely fits on an e50, a 20t can fit with

> some dremeling to the cases. Being stuck with a 38 isn't thay bad

> honestly. I think tomos front sprocket spline is the same as the rear,

> and they have 22-31 readily available. Just watch the chain line as it

> might start to drag on the swing arm pivot.

Daniel your sometimes your intelligence is beyond your years

Re: tomos Arrow/E50 build. Gearing is weird. Need suggestions.

that sucks, poor arrow...

Re: tomos Arrow/E50 build. Gearing is weird. Need suggestions.

If you have a good idea of gear ratios then this is simple.

35 rear with a 11 front then you could convert it to (16 x 40).

11 is the smallest I believe you can go on puch. 16x40 is kinda a lot, you could probably run 15x35.

Re: tomos Arrow/E50 build. Gearing is weird. Need suggestions.

11x38 or 16 x 43.

That is only 2 teeth in the back from stock!

You should have a good starting point from there even on a stock mild kit(edited)

Re: tomos Arrow/E50 build. Gearing is weird. Need suggestions.

Overpriced Parts /

> Rocco Taco Wrote:

> -------------------------------------------------------

> If you have a good idea of gear ratios then this is simple.

>

> 35 rear with a 11 front then you could convert it to (16 x 40).

>

> 11 is the smallest I believe you can go on puch. 16x40 is kinda a lot,

> you could probably run 15x35.

Read whole post Rocco, Tomos arrow Wheel is only 12 inches in diameter

Re: tomos Arrow/E50 build. Gearing is weird. Need suggestions.

> Ken Roff Wrote:

> -------------------------------------------------------

> > Rocco Taco Wrote:

>

> > -------------------------------------------------------

>

> > If you have a good idea of gear ratios then this is simple.

>

> >

>

> > 35 rear with a 11 front then you could convert it to (16 x 40).

>

> >

>

> > 11 is the smallest I believe you can go on puch. 16x40 is kinda a lot,

>

> > you could probably run 15x35.

>

> Read whole post Rocco, Tomos arrow Wheel is only 12 inches in diameter

you really believe in that shit? I remember some kid with a motorized bike was talking to me at the skatepark and he wanted bigger wheels to gain mph, I wanted to tell him just to slap a kit and pipe on it but I keep my mouth shut. we are talking about 5" never mind weight its not going to effect much.

the kids got a 70cc kit I think at 11x38 or aka 16 x43 he will be very happy

Re: tomos Arrow/E50 build. Gearing is weird. Need suggestions.

It's a 34.48% difference and that's before you consider the difference in tire height.

Re: tomos Arrow/E50 build. Gearing is weird. Need suggestions.

Overpriced Parts /

> DPC Ryan Wrote:

> -------------------------------------------------------

> It's a 34.48% difference and that's before you consider the difference

> in tire height.

Yeah Rocco’s a little bit behind at times as far as experience goes!

Gear for the power band means everything! and this is me telling you from the mid-70s with Kawasaki 100s and other small displacement bikes!

gear for your powerband that’s all I could say !

Re: tomos Arrow/E50 build. Gearing is weird. Need suggestions.

> Ken Roff Wrote:

> -------------------------------------------------------

> > DPC Ryan Wrote:

>

> > -------------------------------------------------------

>

> > It's a 34.48% difference and that's before you consider the difference

>

> > in tire height.

>

> Yeah Rocco’s a little bit behind at times as far as experience goes!

>

> Gear for the power band means everything! and this is me telling you

> from the mid-70s with Kawasaki 100s and other small displacement bikes!

>

> gear for your powerband that’s all I could say !

Gearing for powerband is part of it not the entire pie. Without a doubt I have 0 experience but I think your to worried about A bike that Will easily pull those gears but I also only weigh 155lbs

Re: tomos Arrow/E50 build. Gearing is weird. Need suggestions.

Dirty30 Dillon /

> Rocco Taco Wrote:

> -------------------------------------------------------

> > Ken Roff Wrote:

>

> > -------------------------------------------------------

>

> > > DPC Ryan Wrote:

>

> >

>

> > > -------------------------------------------------------

>

> >

>

> > > It's a 34.48% difference and that's before you consider the

> difference

>

> >

>

> > > in tire height.

>

> >

>

> > Yeah Rocco’s a little bit behind at times as far as experience goes!

>

> >

>

> > Gear for the power band means everything! and this is me telling you

>

> > from the mid-70s with Kawasaki 100s and other small displacement

> bikes!

>

> >

>

> > gear for your powerband that’s all I could say !

>

> Gearing for powerband is part of it not the entire pie. Without a doubt

> I have 0 experience but I think your to worried about A bike that Will

> easily pull those gears but I also only weigh 155lbs

Of course it will have no problem, because it is super short gearing. The problem is not pulling tall gearing, it's about being stuck in over-rev at 43.4 mph

Re: tomos Arrow/E50 build. Gearing is weird. Need suggestions.

> Dirty30 Dillon Wrote:

> ------------------------------------------------------

> Of course it will have no problem, because it is super short gearing.

> The problem is not pulling tall gearing, it's about being stuck in

> over-rev at 43.4 mph

Right, the bike will be wheezing at 2/3 of it's potential top speed and causing a lot of heat buildup and wear with the potential failures far more likely. And for what, to cruise at 32 mph with a top speed just over 40?

This is exactly the reason I literally put my NC50 to the curb after tons of tinkering with exhaust work, porting, intake and carb etc. I got it to do 43mph on the stock cylinder but it was howling to even go 35 and the heat buildup had me shutting it down after a couple of miles just cruising. I am not trying to specifically compare the two instances because the cooling ability of the two engines will be significantly different but it was the realization that I was stuck with a fixed ratio that I would never be able to see the potential of the build. Even trying to casually ride the bike in the way I wanted (cruising 40-45) was going to result in a lot of heartache when it turned out to be a grenade every time.

Re: tomos Arrow/E50 build. Gearing is weird. Need suggestions.

God some of you people dont know anything! Ken even dropped the numbers in the tool box calculator for y'all. 18x38 is a nice ratio with 12 inch tires, 45mph is just under 9k.

Ryan, you have obviously never fucked with a puch with a stock gears. So get the fuck out of this thread with you express anecdotes. 17x45 is a ratio you can hit +55 on.

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