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ER-5 modifications

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Uffe
L Plate Warrior



Joined: 27 Oct 2015
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PostPosted: 10:41 - 27 Oct 2015    Post subject: ER-5 modifications Reply with quote
Hello, im modifying my ER5 for fun and thinking of changing the rear suspension to move it inwards the bike like a modern bike and im wondering if theres anyone who's done a similar thing to they're own bike.

Im suspecting theres tons of cutting, welding and measuring to be done and im fine with that, but what im most concerned about is the balance of the bike and to get it right so it doesnt kill me.

So if theres anyone out there that can give me some advice i'd be most thankful.

Last edited by Uffe on 11:17 - 27 Oct 2015; edited 1 time in total
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RhynoCZ
Super Spammer



Joined: 09 Mar 2012
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PostPosted: 10:55 - 27 Oct 2015    Post subject: Reply with quote
I think no cutting nor welding will be necessary. The ER 5 has got the twin-shock swing arm, so it's just 4 bolts, the old shocks off and fit the new shocks of the same length there. Thumbs Up
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MarJay
But it's British!



Joined: 15 Sep 2003
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PostPosted: 10:59 - 27 Oct 2015    Post subject: Reply with quote
RhynoCZ wrote:
I think no cutting nor welding will be necessary. The ER 5 has got the twin-shock swing arm, so it's just 4 bolts, the old shocks off and fit the new shocks of the same length there. Thumbs Up


He means convert it to monoshock I think.

It's a huge faff, and I suspect the reason it's twinshock is that there is nowhere for the shock top mount to go. Far easier to sell it and buy a nice GPZ500S. Or sell it and buy an SV650, or sell it and buy an old ZX6R. Any of those options would be better than twatting around with an old ER5.
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Remember kids, bikes aren't like lego. You can't easily take a part from one bike and then fit it to another.
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Rogerborg
nimbA



Joined: 26 Oct 2010
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PostPosted: 11:00 - 27 Oct 2015    Post subject: Reply with quote
Weird thing to do when classic twin shocks are all the rage among the hipsteratti.

Let's have a look at your design sketches then.
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Uffe
L Plate Warrior



Joined: 27 Oct 2015
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PostPosted: 11:14 - 27 Oct 2015    Post subject: Reply with quote
MarJay wrote:
He means convert it to monoshock I think.


I probably do

MarJay wrote:
Any of those options would be better than twatting around with an old ER5.


But i want to twat around with my er5.

Rogerborg wrote:
Weird thing to do when classic twin shocks are all the rage among the hipsteratti.


lol

Rogerborg wrote:
Let's have a look at your design sketches then.


Dont have any, just a thought atm. Im looking to hear from someone that've done it, im intrested in the process.
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RhynoCZ
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Joined: 09 Mar 2012
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PostPosted: 11:22 - 27 Oct 2015    Post subject: Reply with quote
I'd try to fit better shocks first. If that won't make you happy, have a look at the GPZ 500 frame. I'm not saying use the GPZ frame, but just have a look to get an idea.

By the way, can't wait to see your project. Thumbs Up
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'87 Honda XBR 500, '96 Kawasaki ZX7R P1, '90 Honda CB-1, '88 Kawasaki GPz550, MZ 150 ETZ
'95 Mercedes-Benz w202 C200 CGI, '98 Mercedes-Benz w210 E200 Kompressor
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MarJay
But it's British!



Joined: 15 Sep 2003
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PostPosted: 11:23 - 27 Oct 2015    Post subject: Reply with quote
Uffe wrote:

Dont have any, just a thought atm. Im looking to hear from someone that've done it, im intrested in the process.


99% chance the bike will end up cut to bits and you'll sell it as an 'unfinished project'.

https://en.wikipedia.org/wiki/Dunning%E2%80%93Kruger_effect
____________________
British beauty: Triumph Street Triple R; Loony stroker: KR1S; Track fun: GSXR750 L1; Commuter Missile: GSX-S1000F
Remember kids, bikes aren't like lego. You can't easily take a part from one bike and then fit it to another.
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Uffe
L Plate Warrior



Joined: 27 Oct 2015
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PostPosted: 11:36 - 27 Oct 2015    Post subject: Reply with quote
RhynoCZ wrote:
I'd try to fit better shocks first.


This is the fallback idea!

RhynoCZ wrote:

If that won't make you happy, have a look at the GPZ 500 frame. I'm not saying use the GPZ frame, but just have a look to get an idea.


Will do, thanks man.

RhynoCZ wrote:
By the way, can't wait to see your project. Thumbs Up


Me neither Shocked

MarJay wrote:
99% chance the bike will end up cut to bits and you'll sell it as an 'unfinished project'.
https://en.wikipedia.org/wiki/Dunning%E2%80%93Kruger_effect


Dont worry, i know my skills with metal work very well and they are very poor. Im not gonna start cutting a damn thing until i have a proper idea of what to do and some help to do it with.
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chris-red
Have you considered a TDM?



Joined: 21 Sep 2005
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PostPosted: 15:15 - 27 Oct 2015    Post subject: Reply with quote
I doubt anyone has done it's a lot of work for no real gain on a bugdet bike.

Buy a better set of twin shocks and get the forks sprung and valved to your weight.
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nowhere.elysium
The Pork Lord



Joined: 02 Mar 2009
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PostPosted: 15:48 - 27 Oct 2015    Post subject: Reply with quote
Uffe wrote:
Im not gonna start cutting a damn thing until i have a proper idea of what to do and some help to do it with.
You'd need to start with a major frame and swingarm modification, neither of which are what I (or anyone else, for that matter) would think of as a 'starter project' for a metalworking noob.

Realistically, what you're describing is making a naked GPZ500. So buy a crash-damaged GPZ500 and take the plastics off.
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redeem ouzzer
World Chat Champion



Joined: 06 Oct 2015
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PostPosted: 17:37 - 27 Oct 2015    Post subject: Reply with quote
Op, where you put airbox and battery?

Just asking.
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stinkwheel
Bovine Proctologist



Joined: 12 Jul 2004
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PostPosted: 17:42 - 27 Oct 2015    Post subject: Reply with quote
nowhere.elysium wrote:


Realistically, what you're describing is making a naked GPZ500. So buy a crash-damaged GPZ500 and take the plastics off.


Correction.

A naked GPZ500 with 15% less power at the back wheel.

Mind you. I wopuldn't be entirely surprised if a GPZ500 swingarm bolted in there. Then you "just" need somewhere to bolt the top of the shock. Then somewhere else to keep the battery. And a remodelled rear mudguard. And a reshaped airbox.

I agree with the others. It's a silly idea and you'd be better off spending the money on sorting out the current suspension and brakes.

Not saying it can't be done but it's going to be a lot of time, money and effort to land up with a lower powered version of something you can already buy quite cheaply.

If you are dead set on monoshocking it. Buy a scrap GPZ500 frame, shock and swingarm and go from there.
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I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles.
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Ste
Not Work Safe



Joined: 01 Sep 2002
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PostPosted: 17:48 - 27 Oct 2015    Post subject: Re: ER-5 modifications Reply with quote
Uffe wrote:
thinking of changing the rear suspension to move it inwards the bike like a modern bike

Im suspecting theres tons of cutting, welding and measuring to be done and im fine with that, but what im most concerned about is the balance of the bike and to get it right so it doesnt kill me.

Sell it and get a bike with monoshock suspension.

And find something else to cut up with an angle grinder.

Wink
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Rogerborg
nimbA



Joined: 26 Oct 2010
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PostPosted: 18:13 - 27 Oct 2015    Post subject: Re: ER-5 modifications Reply with quote
Ste wrote:
And find something else to cut up with an angle grinder.

GS500? Wink
____________________
Biking is 1/20th as dangerous as horse riding.
GONE: HN125-8, LF-250B, GPz 305, GPZ 500S, Burgman 400 // RIDING: F650GS (800 twin), Royal Enfield Bullet Electra 500 AVL, Ninja 250R because racebike
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Ste
Not Work Safe



Joined: 01 Sep 2002
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PostPosted: 18:40 - 27 Oct 2015    Post subject: Reply with quote
Of something like one of these is perfect for cutting into small pieces with an angle grinder. Thumbs Up

https://i.imgur.com/XJg4CeX.jpg

I think tatt0owarrior got offended, he's made all his photobucket pictures private. Laughing
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