450r a-arm build

[profab]

building some new a-arms for a 04 450r. Bike is set with 6 3/4 in the rear and 7 1/4 in the front . Bike well be 50" wide. Front end is adj between 1" and 2" foward. not on here much due to work. Well post more pics is we go.

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pic

[KEVIN132]

ok but this shows st are u going to have LT as well??
most racers never use ST..

look good tho:)

[KEVIN132]

chromoly or steel?

[profab]

they or going to be lt and it is moly thank mark

[number52]

They look exactly like the old Walsh 250R LT. Very nice.

[laeger400]

Looks nice mark. Can't wait to see them finished.

Thanks Jerry

[laeger400]

Originally posted by KEVIN132
ok but this shows st are u going to have LT as well??
most racers never use ST..

look good tho:)

How do you know it's ST? Lol it's a pic of unfinished arms. Im just havin some fun so don't get upset with me.

Thanks Jerry

[profab]

thanks guys really glad u like them

[brewster426]

Looks like he saw the first picture with the standard travel Elka on the right front. Just at a glance it looks like it's the same length on both sides. The arms look great. Good job!

[KEVIN132]

st standard travel
lt long travel
2 to 3 difference between both

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bushing

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[TheLane]

im wondering how the heck he could tell if they were lt or st from just looking at them.....

[brewster426]

You can usually tell from the lower shock mount. Or you can tell from the short shock.

[number52]

Looks great but I would suggest doing away with the heims on the lower arms. It's way to hard for most to set them up correctly.

It doesn't matter if they are ST or LT. Just let the guy show his pics

[profab]

i know what u are saying ran in to that before when i did sale arms but as of right now not looking to sale and i like the look of the heims thanks alot for the suggestion

[brewster426]

Looks awesome! Looks like there is quite a few hours in all that.

[profab]

thanks there is quite a bit of time in it more in sitting it all up then building . i should just build a jig and build off of that but this is how i started building a-arms long time ago. we have alot of parts to build trx450 a-arms swingarm nerfs same for a trx90 and a-arms and a set of propeg nerfs for a walsh crf. pretty happy to get a chance to fab agian . here is my grandson 3 weeks old monday i am going to love to build him a quad i know it is a little early but was thinking of the new lt90 plastic and ktm 50 motor. i think that would be cool. thanks for all ur feed back guys

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[DnB_racing]

Originally posted by profab
1 congratulations!! build a child seat for a quad, start him young

[racerx573]

I am just wondering what you do to calculate the leverage ratios, for shock placement and the angles of the a-arms?

Definitely a sick set of arms, from the looks they're comparable to Walsh. Did you use Walsh a-arms as an example?

[laeger400]

Just wanted to say thanks for your help with my parts. I will start on our fixture tables towards the end of the week. Your arms are looking good.

[profab]

racerx573 well i am sure there is a formula to do it but i draw it all out on poster board. if ur doing it ur self u can talk to ur shock builder on what they want. but most of them want 2 to 1 and put ur upper shock tower in when u draw it. the angle of the shock make a difference. i was talking with a good friend of mine (leager400) about it and i think he may have found a formula for it not forsure.u could pm him great guy to talk with. yea i have always like the walsh longbody 250r arms was think some old on something new would be cool.

no problem jerry. been great dealing with u. i got one lower arm done for the trx90 well post pics when i get the upper done.

[Moto Pro472]

What kind/where did you get your balljoints?

[profab]

well we are waiting on a new jig plate so the 450r is on hold for short time.started a new project trx90. i built three lower a-arms. This is what i come up with at the end but not sure if i like it. Well have to think on it for a while.




MOTO PRO472

The studs come from walsh. The bearings from fk and i made the cups

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[miniquaddad90]

Any further progress on the TRX90?

[finsteratv]

any intrest in selling any?

[quad71]

Nice looks like you are using 400ex spindels on the 450 you putting the 450 brakes on the ex spindels?

[profab]

sorry working way to much no progress on either project. looks like it will be at least 3 week before i can get back to them