R75/5 Tank Slightly Crooked (no dents/etc) How to straighten?

jbf · 09-23-2012, 12:29 AM

Hi all,

So I noticed that my recently purchased r75/5's gas tank is eeeevver so slightly nudged to one side at the rear of the tank (where the two posts connect with the tank). It is probably only off by say... 1/2 of an inch or so.

I can push the tank over but obviously it springs right back. There are no dents in the tank and the frame is fine as well. It is fitted on the posts pretty good. Any idea why the tank may be slightly off center where the rear meets the seat?

I checked the actual spacing between the tank and the frame itself on each side where the tank meets the tool tray frame.

How could i get it properly aligned? Would I simply just bend the screws/posts that the tank fastens slightly with say a block of wood pushed in the direction i wanted the tank to go?

rufusswan · 09-23-2012, 06:14 AM

A 1/2" off is way too far off. Take a break and then look at and measure things until you find the 'real' issue. The front mount may be screwy, the holes to fit the two mounting screws may have been drilled off center, etc.

disston · 09-23-2012, 06:55 AM

Rubber parts may be no good. The two posts in back? And the rubber thingie up front. Both have to be in good shape. Both are still available. Something's bent, could it be the seat is not sitting on the frame right makes the tank look off.

east high · 09-23-2012, 10:18 AM

Like Disston said, it's probably the rubber bits. I bet the rubber bumper in the front is ripped. Like mine

wirewrkr · 09-23-2012, 01:08 PM

If you need the front rubber saddle, let me know. I have quite afew good ones and youcan have one for the shipping cost.
(2.00)

wirewrkr · 09-23-2012, 01:10 PM

A picture of the rear mis-alignment would be helpful.

jbf · 09-23-2012, 04:30 PM

Ok so checked it again today and reseated the tank and it appears to be on pretty straight now. Though it looks like the main culprite is that the seat itself is not 100% straight.

It is a plastic pan so it is definately a reproduction (it doesnt have the bmw stickers or anything of the sort).

In any case I'm much more ok with seat being off than the tank. Ill try to diagnose it tomorrow.

Ill post some pics then as well.

Cheers!

09-23-2012, 12:29 AM	#1
jbf ^OP Adventurer Joined: Apr 2012 Location: Los Angeles, CA Oddometer: 24	R75/5 Tank Slightly Crooked (no dents/etc) How to straighten? Hi all, So I noticed that my recently purchased r75/5's gas tank is eeeevver so slightly nudged to one side at the rear of the tank (where the two posts connect with the tank). It is probably only off by say... 1/2 of an inch or so. I can push the tank over but obviously it springs right back. There are no dents in the tank and the frame is fine as well. It is fitted on the posts pretty good. Any idea why the tank may be slightly off center where the rear meets the seat? I checked the actual spacing between the tank and the frame itself on each side where the tank meets the tool tray frame. How could i get it properly aligned? Would I simply just bend the screws/posts that the tank fastens slightly with say a block of wood pushed in the direction i wanted the tank to go?

09-23-2012, 06:14 AM	#2
rufusswan Studly Adventurer Joined: Nov 2007 Location: Branson MO Oddometer: 916	A 1/2" off is way too far off. Take a break and then look at and measure things until you find the 'real' issue. The front mount may be screwy, the holes to fit the two mounting screws may have been drilled off center, etc. __________________ 1971 BMW R75/5 Toaster LWB 1974 Honda CL200 http://zenhuckfinn.wordpress.com/

09-23-2012, 06:55 AM	#3
disston ShadeTreeExpert Joined: Mar 2011 Location: Silver Spring, Md Oddometer: 5,217	Rubber parts may be no good. The two posts in back? And the rubber thingie up front. Both have to be in good shape. Both are still available. Something's bent, could it be the seat is not sitting on the frame right makes the tank look off. __________________ Never memorize something you can look up. ---Albert Einstein

09-23-2012, 10:18 AM	#4
east high Studly Adventurer Joined: Oct 2009 Location: Portland, Oregon Oddometer: 758	Like Disston said, it's probably the rubber bits. I bet the rubber bumper in the front is ripped. Like mine __________________ '71 r75/5

09-23-2012, 01:08 PM	#5
wirewrkr the thread-killer Joined: May 2008 Location: HIGH desert Oddometer: 4,297	If you need the front rubber saddle, let me know. I have quite afew good ones and youcan have one for the shipping cost. (2.00) __________________ www.wirewerkes.com KILL YOUR TELEVISION !!!!

09-23-2012, 01:10 PM	#6
wirewrkr the thread-killer Joined: May 2008 Location: HIGH desert Oddometer: 4,297	A picture of the rear mis-alignment would be helpful. __________________ www.wirewerkes.com KILL YOUR TELEVISION !!!!

09-23-2012, 04:30 PM	#7
jbf ^OP Adventurer Joined: Apr 2012 Location: Los Angeles, CA Oddometer: 24	Ok so checked it again today and reseated the tank and it appears to be on pretty straight now. Though it looks like the main culprite is that the seat itself is not 100% straight. It is a plastic pan so it is definately a reproduction (it doesnt have the bmw stickers or anything of the sort). In any case I'm much more ok with seat being off than the tank. Ill try to diagnose it tomorrow. Ill post some pics then as well. Cheers!

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