HRC Swingarm Upgrade...

Honda's HRC Swingarm is a worthy upgrade for an RC45 and it's an easy
bolt on Mod if you happen to have all the kit parts specified in the
HRC manual... like HRC kit shock... HRC kit suspension linkage... HRC
kit brake hanger and so on... but if you don't have the parts then
it's a pain in the butt to interface one kit part with all the other
stock parts... so it was up to my own skills to engineer and machine a
list of parts to interface the HRC swingarm with the stock Honda
parts... consequently Mr.RC45 has been up on blocks for a couple of
months while the Lathe and Mill turned out the these parts... enjoy
the picture show...


Modified parts along side the stock Honda parts...


7075 T6 aluminum swingarm axle and nut...


7075 T6 aluminum lock nut and socket...


7075 T6 aluminum axle installed...


7075 T6 aluminum nut installed...


Aluminum block interfaces stock linkage with HRC swingarm hard
point... titanium hardware...



It took 9 days of sanding and polishing to remove all the rough
casting marks and bring out the luster of the aluminum...




Home made brackets and aircraft Adell clamps now hold a custom ordered
Spieglar steel braided line...


525 DID chain and modified 43t steel Kawasaki sprocket... titanium axle nut and sprocket nuts & bolts...


Machining a hanger for a billet 4 pot Brembo caliper...


Finished hanger and torque arm to fit HRC swingarm and home made 7075
T6 7M thread aluminum shoulder bolt...








I covered the titanium exhaust with the new titanium warp...



Ohlins shock and 4mm spacer that adjust ride height to correct Honda's
error in trail...

 

Nicely done. I can't wait to see the whole bike put back together!

 

:thumbsup::thumbsup:Man that is great work awesome job can not say that enough.. I have a qwestion do you think you could make a different set of clipons out of aluminum as like the helibar?? I have someone I know and am trying to get into making a custom pair maybe up 2 inches and back 3 out of aluminum...or should we cut stock bar heli wield a spacer in between where the grips go and the tree mount to move the bar up and back ..??? please PM me that is great work....:thumbsup::thumbsup::thumbsup::thumbsup::thumbsup::biggrin:

 

One Word Sweet! that and you have been one busy boy there Larry. nicely done.

 

you missed a spot ...polish it right if your gonna do it................LOL

Looks good bro!

 

Great now I have to go find some titanium wrap ...Ebay?

 

My billet bar risers are $450 a set...

 

http://www.designengineering.com/products.asp?m=sp&pid=95

 

If you don't mind me asking, what is the benefit of the HRC swing arm if the dimensions are the same as stock?

 

Weight and stiffness...

Stock arm weights 11 lb 7.5 oz but the HRC arm weights 11 lb 2 oz

The HRC aluminum swingarm is stiffer internally with more webs to
resist the loads during the rigors of WSBK racing but it actually
weights in less due to it's extensive use of aluminum and titanium
bits...


The HRC aluminum swingarm is stiffer internally with more webs to
resist the loads during the rigors of WSBK racing but it actually
weights in less due to it's extensive use of aluminum and titanium
bits...

HRC Swingarm with extra internal webs...


Stock RC45 Swingarm without the extra internal webs...

 

Larry:

I have two questions brother!

Where did you find a HRC swingarm?

Do you do track days on your RC45?

BZ

 

And, would that RC45 swingarm bolt up to an RC46?? :biggrin:

 

BUBBA!!! do you still post in STN???

It all started with an personal message in VFRD... the sender wanted
to know if this strange swingarm he found on Ebay could be modified to
fit his VFR... I took one look at it and gasped... here was a $2,500
HRC swingarm with a $200 reserved because the seller thought it was a
VFR swingarm... I sniped it at the wire for $220 delivered...

The seller sent this info on the swingarm:

"Larry, My neighbor works for a trade show company that does a lot of
trade shows for Honda. This was on display at one of the trade shows,
and one of the Honda guys told my nieghbor that he could take it home.
He asked me to list this for him, so I will check with him to find out
if he has any more parts. I myself do not have any items that go with
this swingarm."

Mr.RC45 and I have done track days at Laguna Seca and Thunder Hill...

 

Larry:

I think you have the wrong Bubba Zanetti. I don't know what STN is? lol!

Anyway, very cool score for you brother! I was curious where a race swing arm like this would pop up. Not suprised about ebay. I've seen some interesting things pop up on their too.

You have my utmost respect for taking your RC45 to the track. It has always bothered me when people score a neat or unique bike and don't actually ride it. Especially something like a RC45. Man that thing has to be fun to take on the track.

Post up some track pics if you have any sometime.

And thanks for answering my quries brother.

BZ

 

You're welcome BZ... check out this profile in STN...

Login - Sport-Touring.Net

 

...someone converted their RC45 to belt drive???

 

^ Its top secret!!!! Keep it on the down low till the kit come out.....

 

Psssstttt.....

 

Ah, so you put an RC45 swinger on you 500.

 

Chains are a pain... belts spell relief...
Unchain My Bike... Or So I Thought... - VFRD