Author Topic: My grandpas bike I got for free (Read 11253 times)

Stev-o · « **Reply #25 on:** October 13, 2011, 08:01:51 PM »

There is really no need to regear, once you get it running properly, you will have plenty of low end torque.

tanman855 · « **Reply #26 on:** October 14, 2011, 05:02:53 AM »

Well the goal was to get it running good before the build yes, the makor components of the build are going to take place at school during 3rd quarter, 2 weeks of 1st quarter left. In the meantime I'm going to get new shocks, lower the whole thing abount 2" and order most of the aftermarket parts: seat and handlebars from carpy, as well as progressive front and rear suspension compnents, and gear it down. At least thats the plan right now.

mrjack55 · « **Reply #27 on:** October 14, 2011, 06:05:57 AM »

Looking good tanman!
Congrats on the free CB750 (love granddad deals), and welcome to the forum. It brings a warm fuzzy feeling into my heart to see a young-blood so excited to work on one of these old gals. I think that this is the best school project that I have ever heard of.
Good luck with your build.

When I got my K7, the PO had a set of heavy duty shocks for 2 up riding. As a short dude, I could barley touch the ground. I looked into quite a few shocks, and settled on a set of 310mm/12.2" Hagons. The come in many lengths, and are available with a clevis mount. In addition, they fit, perfectly, so no cutting or bending of the chain guard.
Also, they(DaveQuinnMotorcycles.com) can set up the spring weight to best suit you and your style of riding. For the money, they can't be beat. My opinion of course.

Keep up the good work!

Tews19 · « **Reply #28 on:** October 14, 2011, 06:39:07 AM »

Hey not to be Debbie downer but you can get parts for much cheaper.. Look into Z1enterprises. If you are going with clip -ons, searched the forum... Lots of peeps cant do extended rides with those and clubmans.

mrjack55 · « **Reply #29 on:** October 14, 2011, 10:53:51 AM »

Quote from: Tews19 on October 14, 2011, 06:39:07 AM

Hey not to be Debbie downer but you can get parts for much cheaper.. Look into Z1enterprises. If you are going with clip -ons, searched the forum... Lots of peeps cant do extended rides with those and clubmans.

+1
Look around before you send any money to anyone. There are a LOT of options out there for both OEM and aftermarket parts.

tanman855 · « **Reply #30 on:** October 14, 2011, 02:02:26 PM »

Ok ill keep my eyes open, and on another note I would apreciate it if people would stop questioning why I want to gear it down and judging how fast my bike is based on a picture I use for my avatar. I simply want to know some of the lowest gear ratios people have used.

mrjack55 · « **Reply #31 on:** October 14, 2011, 03:39:39 PM »

Quote from: tanman855 on October 14, 2011, 02:02:26 PM

Ok ill keep my eyes open, and on another note I would apreciate it if people would stop questioning why I want to gear it down and judging how fast my bike is based on a picture I use for my avatar. I simply want to know some of the lowest gear ratios people have used.

No one is questioning your reasons why, they're just trying to help in their own way. I understand what you are looking to do. I have one question if I may? Have you counted the teeth on both sprockets? It is possible that your grand father changed, or had someone change the gearing. The original gears are 14T in front, and 48T in back. Giving you a ration of about 2.32. In one of these higher reving sohc4, that gives most riders a good combo of street and highway. Very close to what you said you were looking for.
It's not quite the same as a car. These engines will get the the red line much faster than a small block. But, I'm willing to bet you may already know that.

tanman855 · « **Reply #32 on:** October 14, 2011, 04:47:05 PM »

It isnt going to be a daily driver or driven on the highway, thats why I want to gear it down to what most people probably wouldnt want unless they are drag racing. yes it has the stock gears.

mrjack55 · « **Reply #33 on:** October 14, 2011, 05:17:24 PM »

Quote from: tanman855 on October 14, 2011, 04:47:05 PM

It isnt going to be a daily driver or driven on the highway, thats why I want to gear it down to what most people probably wouldnt want unless they are drag racing. yes it has the stock gears.

Ah, now that makes a difference. If you don't plan on driving it everyday, ballz to the wallz it is!
All out front tire lifting scare the wewe out of you =15/46.
Still killer off the line power with a little less wewe=17/42

tanman855 · « **Reply #34 on:** October 14, 2011, 05:37:50 PM »

Finally! Thank you very much.

mrjack55 · « **Reply #35 on:** October 14, 2011, 05:55:07 PM »

Quote from: tanman855 on October 14, 2011, 05:37:50 PM

Finally! Thank you very much.

You're very welcome.

BTW, I just sent you a PM.

Roach Carver · « **Reply #36 on:** October 14, 2011, 07:15:25 PM »

I think the tooth numbers given are for a 630 chain. That bike should have a 530. The front sprocket should have 17 or 18 teeth. 16 is possible but hard on chains. I would go for 17 on the front and increase the rear sprocket until you get what you want.

tanman855 · « **Reply #37 on:** October 14, 2011, 10:03:58 PM »

That's what I heard, like 17 and 54 or something like that.

tanman855 · « **Reply #38 on:** October 15, 2011, 09:41:58 PM »

just ordered a custom 56 tooth rear sprocket because I have the 18t front. Should give me a 3.11 gear ratio.

mrjack55 · « **Reply #39 on:** October 16, 2011, 08:34:58 AM »

Quote from: tanman855 on October 15, 2011, 09:41:58 PM

just ordered a custom 56 tooth rear sprocket because I have the 18t front. Should give me a 3.11 gear ratio.

That should about rip you arms out the shoulders off the line.

tanman855 · « **Reply #40 on:** October 16, 2011, 09:31:11 AM »

The only thing im woried about is shifting, its kind of tough on this bike

754 · « **Reply #41 on:** October 16, 2011, 09:38:58 AM »

Why is it tough to shift?
does it have a "heel and toe" shifter or a Barnett clutch maybe??
I think you just need to get used to it..

Tews19 · « **Reply #42 on:** October 16, 2011, 11:28:30 AM »

Quote from: 754 on October 16, 2011, 09:38:58 AM

Why is it tough to shift?
does it have a "heel and toe" shifter or a Barnett clutch maybe??
I think you just need to get used to it..

+1

tanman855 · « **Reply #43 on:** October 16, 2011, 09:05:59 PM »

I think its how my clutch is set up, it engages late and when I adjusted it, it would not pull it enough and wouldn't go into gear.

tanman855 · « **Reply #44 on:** October 16, 2011, 09:09:47 PM »

Has anyone ever had to re-finish their engine? My gray coating is comming off in some places.

Tews19 · « **Reply #45 on:** October 16, 2011, 09:47:15 PM »

refinish? you mean paint correct? Its very common here. Look at other build threads and you will see most have repainted

Stev-o · « **Reply #46 on:** October 19, 2011, 07:40:44 PM »

To be more clear, the covers were not painted from the factory but the cases were.
You could paint the covers, I prefer to polish them.

tanman855 · « **Reply #47 on:** October 20, 2011, 09:37:28 AM »

The covers look good, they look like crome. It's under the carbs where some gas has dripped and the paint came off.

Lostboy Steve · « **Reply #48 on:** October 20, 2011, 02:54:06 PM »

There is something extremely special about owning something that your grandfather owned. Good Luck with it and keep it alive!

754 · « **Reply #49 on:** October 21, 2011, 09:03:56 AM »

How is your Grandpa with these mods you are thinking of doing ?

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Author Topic: My grandpas bike I got for free (Read 11253 times)

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