Re: Hobbit.... and we're off!

> Alex Hedrick Wrote:

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

> > Graham Motzing Wrote:

>

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

>

> > Always love your work Alex but I have no idea where you're going with

>

> > this one ...

>

> Hey thanks!!! Sadly enough.. lots of life things have come up and I have

> to put this on the back burner for a while... it WILL be finished soon

> enough!!

Sorry to hear about your life road bumps .

Hopefully you'll be able to keep going on the project , before you remember it , some 9 years up the road . ;)

Re: Hobbit.... and we're off!

Keeping the carburetor in midline which I don't think you are but if you did you have to extend the shocks length so much that there's too much play in the subframe At least that's my experience with the 330 mm length to keep the frame from crushing the Malossi 21 phbg method.. That's why I'm trying to get back to the original specs on the rear shocks and lower the whole thing down I did that on one of my three hobbits and I'm very happy with the result. The whole suspension works better once I lowered the rear back to 290 mm

Re: Hobbit.... and we're off!

Alex Hedrick /

Ok ok ok... so after life things.. I think I'm back to finish this up finally.. made some progress yesterday.. got the shocks relocated and new mounts made up.. got the motor put together, pipe ran carb set, ignition and water pump. Roughed in the rad lines.. damn treats forks never catch the brake plates.. made up an adapter and broke the cable mount in the process so I had to add a new one to the adapter.. Alls good!!

Oh yeah. It started without hesitation.. only ran it for a 20 seconds maybe..

Time to pick a seat and figure out where my feet are going haha

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Re: Hobbit.... and we're off!

You need to sell these adapters for the ebr forks.

Re: Hobbit.... and we're off!

Alex Hedrick /

> Jay Rivett Wrote:

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

> You need to sell these adapters for the ebr forks.

I was thinkin that same thing.. just maybe!! I need to get this rippin so I can put it through its paces and really prove it out..

I ended up tapping for a 1/4-20 set screw on the back side of it.. clamps right on to the fork tap.. either way, its not going anywhere! Can't wait to get the rest of the shit I need to finish this!

Oh yeah.. I ended up milling the cylinder down like a year ago, forgot how much I took off, checking squish, its right where I want it.. .0300" or .78mm for you metric folk.

Might tighten that up later cause you know.. it is liquid cooled.. for now its good!

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Re: Hobbit.... and we're off!

Alex Hedrick /

Alright ladies.. got the rear fender in place. Its solid.. did what came to mind for a third mounting point.. (trying not to weld anything on the sub frame) sooo thats that.

Drilled and tapped for 1/8 npt in the rad for a coolant temp sensor.. should work good!

Now.. wait for last bit of parts I need to get this rollin down the road..

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Re: Hobbit.... and we're off!

Alex Hedrick /

Oh yeah.. heres the backside of the adapter I made up for the front brakes.. 1/4-20 set screw keepin things in place!

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Re: Hobbit.... and we're off!

@alex...looks great . How long are those shocks. I wanted to get back to the original angles . That's why I had to bring the carb out. I sort of think that the longer shocks make the rear end squirrelly and prone to too much flex when laid on its side when turning. But perhaps the stoutness of your subframe manages all this?

Re: Hobbit.... and we're off!

Alex Hedrick /

> Marc Friedman Wrote:

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

> @alex...looks great . How long are those shocks. I wanted to get back to

> the original angles . That's why I had to bring the carb out. I sort of

> think that the longer shocks make the rear end squirrelly and prone to

> too much flex when laid on its side when turning. But perhaps the

> stoutness of your subframe manages all this?

Thank you! It's a work in progress.. slowly getting there!

I believe they are 310 or 320mm.. ive them laying around for a few years.. I really only planned on using them for mocking things up as they just so happened to be the length I was looking for..

As for the rear end feeling "loose".. cant speak on that yet! Its not ready to ride yet.. but im sure ill find out soon enough!

The mlm subframe is quality no doubt.. but seems to flex a bit when I really load it one way of another..

It's all hard to say how it will do under riding condition this early on in the build!

Re: Hobbit.... and we're off!

Yes at this point you won't appreciate my observation on too long a set of shocks totally screws up the handling but please keep an open mind on the subject.

Re: Hobbit.... and we're off!

That blanket statement is garbage Marc

There are untold variables that contribute to a spongy rear. Swingarm flex, spring strength, rebound rate, spring angle, tire profile etc

I’ve run very long shocks at 45deg or more angles and it’s been great.

If the springs are too strong, adding angle is a great way to make them act a touch weaker or a lot weaker. All can be tuned to ones needs

Re: Hobbit.... and we're off!

@jbot: I'm sure you can try to moderate the play that can develop from jacking up the rear end of a hobbit 1.5 plus inches , the sole reason for doing is to avoid the frame from crushing the carb sitting right below it. But I've compared the two using a stock sub, stock wheels etc.etc and my impression is that the bike feels way more solid. With an in- line malossi 21 set up , I used 330.mm.shocks ..that 40.- 50.mm longer. The added leverage overcomes the stock design. Plus the bike simply handles better with a lower rear end. I'm sure that you can somewhat compensate with extensive mods..but why?

.

Re: Hobbit.... and we're off!

Alex Hedrick /

Well.. slowly getting things done..

It runs. Rich as hell. Water pump and rad seem to be working good! Hell yeah!

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Re: Hobbit.... and we're off!

That main pivot shift is a serious wow! It's gonna be a challenge to keep the front wheel planted. The centrifugal clutch doesn't directly pay attention to the throttle. See my profile picture if you are wondering. I've seen pictures of wheelie stops on a few mopeds.

Beautiful work!!

Re: Hobbit.... and we're off!

Alex Hedrick /

Thanks! Yeah I figured if I'm gunna make up a cool hobbit, mind As well go all outish! Haha

So far things are coming together, now I need to figure out this stupid ass stage6/oko or whatever carb and tune it!

Re: Hobbit.... and we're off!

Dirty30 Dillon /

> Marc Friedman Wrote:

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

> That main pivot shift is a serious wow! It's gonna be a challenge to

> keep the front wheel planted. The centrifugal clutch doesn't directly

> pay attention to the throttle. See my profile picture if you are

> wondering. I've seen pictures of wheelie stops on a few mopeds.

>

> Beautiful work!!

Marc, what are you alluding to? Increasing wheelbase reduces likelihood of wheelies, unintentionally.

Re: Hobbit.... and we're off!

Alex Hedrick /

> Dirty30 Dillon Wrote:

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

> > Marc Friedman Wrote:

>

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

>

> > That main pivot shift is a serious wow! It's gonna be a challenge to

>

> > keep the front wheel planted. The centrifugal clutch doesn't directly

>

> > pay attention to the throttle. See my profile picture if you are

>

> > wondering. I've seen pictures of wheelie stops on a few mopeds.

>

> >

>

> > Beautiful work!!

>

> Marc, what are you alluding to? Increasing wheelbase reduces likelihood

> of wheelies, unintentionally.

Yeah.. not totally sure there either.. haha

Re: Hobbit.... and we're off!

Seems like the weight and rider position is back, the front end is a bit higher and that when the power comes on the front wheel will lift..yes I agree a longer wheelbase should be more stable if the center of gravity is more neutral...I could be completely mistaken.

I definitely want to hear how it works.

Re: Hobbit.... and we're off!

You’re completely mistaken as per usual.

Re: Hobbit.... and we're off!

Excellent ...let's just see . I'll be happy to.be wrong.

Re: Hobbit.... and we're off!

Dirty30 Dillon /

> Marc Friedman Wrote:

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

> Excellent ...let's just see . I'll be happy to.be wrong.

The seat is in basically the stock position, and the wheelbase is like 8-10" longer, we don't have to wait because basic moto geometry/physics informs us that this will increase stability, not decrease it.

Simple.

Re: Hobbit.... and we're off!

Marc’s students have to go to school twice as long to unlearn all the wrong things he taught them

Re: Hobbit.... and we're off!

Tweaker trash /

Re: Hobbit.... and we're off!

Three times comrade.

Re: Hobbit.... and we're off!

Alex Hedrick /

Alright.. so.

I feel dumb right now.

This pwk or oko/ stage6 24mm carb is giving me shit..

It revs out great with no load. The second i engage the rear wheel or hold the brake and try to rev, its acting It has no power and wants to bog out and die.

Timing is set at 2mm.

38idle

115 main

What am I missing with this carb?!?!

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Re: Hobbit.... and we're off!

where is your airscrew setting.

Sounds lean on the pilot.

For all intent and purpose it is a Keihin carb

http://www.shiny-red.net/guides/keihin-carburetor-jetting/

Re: Hobbit.... and we're off!

Okos are controlled mostly by the needle.

Like seriously the needle is everything.

Buy a needle kit.

But this sounds like your clutch is hanging up (edited)

Re: Hobbit.... and we're off!

Alex Hedrick /

> JBOT Admin Wrote:

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

> Okos are controlled mostly by the needle.

>

> Like seriously the needle is everything.

>

> Buy a needle kit.

>

> But this sounds like your clutch is hanging up

I've read that about these carbs.. but I guess I've just over looked it..

I'll get some needles..

I swapped in a 120 main and a 38 idle.. definitely a step in the right direction.

Now as for the clutch.. still has original stock springs but no starting shoes. Its got a sprag bearing in er!

I will also get some stiffer springs for the clutch..

Re: Hobbit.... and we're off!

You cannot run stock springs in a kitted hobbit.

It will engage at like 2k

Re: Hobbit.... and we're off!

Alex Hedrick /

> JBOT Admin Wrote:

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

> You cannot run stock springs in a kitted hobbit.

>

> It will engage at like 2k

Jbot.. just come over.. you'll see what I'm talking about with the bog..

In all seriousness I believe Its just a lean bog..

I'll throw in a 40 idle and that should get it off its face coming off idle..

I have a treats order put together. Once it all comes I should be set tuning wise. Needles, bigger jets, springs, ya know.

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