diy km/rovan 5-star rim ring mod

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eyeopenher

Well-Known Member
Messages
77
Location
new jersey
i noticed that my hpi wheels had a metal hex. and i seen on a post on here awhile back from BIGGER THE BETTER about putting a metal ring around his son's km wheels... well, i have the hpi wheels on as of right now. but i have a set of km sand tires mounted on km 5 star rims... i also have a set of rovan 5 star rims wit no tires on them. both of these have no metal hex nor a metal ring around the center hub. so i decided to diy way was the way i was going... now for all of you who are asking if the km/rovan rims are this bad, the answer is no. but like all diy mods, its for a little piece of mind wit little money out of the pocket... so here is what i did....

i found that 1 1/4" electrical conduit fit the center hub of the km wheels perfect. next i found that an 1 1/4" electrical conduit coupler fit the rovan center hubs on the rims... so i had an 1 1/4" elbow sitting around the house, bought the coupler for like $5 from home depot and went home to start my project.
first i used a sawzaw which probably was not the best choice but i don't have a machine shop at my house. i cut the pipe and the coupler into 1/8" to 1/4" rings. i only did the different sizes for options... plus i had enough from what you can see in the pictures...
IMG_20111101_125710.gif

next i got out the trusty dremel (pep boys brand... i know, i know.. lol. it was like $19. i have been using it for 4 years and have not one complaint. so i guess it was a good buy) anyways, i used a grinder bit and got rid of all the burs and metal splinters... did all sides and edges and made them all nice and clean... my cuts were pretty good considering i did it wit a sawzaw... my electrician years came back to me... lol
IMG_20111101_151942.gif

next i sanded the hubs a little to give the plastic a lil tooth to hold the epoxy better. rings were already sanded wit the (CLONE) dremel... lol... sorry. i had to... i own a rovan....then used a lil goof off to clean up rings and sanded area of center hubs on rims... oh like the new license plate?
IMG_20111102_200258.gif
:lol::w00t:

next i epoxy'd the center hubs and the metal rings and put them together. some are a lil tighter then others so the ones which were tight i used a piece of wood and a hammer and tapped it down. after the ring is set i would put a lil epoxy around the edges... you have to work fast. there is like a 5 minute set time on the epoxy... hurry hurry hurry.....
IMG_20111102_224957.gif

this is the finished product... they came out pretty good... so for $5 i got an extra piece of mind... here is a picture close up... don't mind the extra epoxy. it dried so quick i let it be... lol
IMG_20111102_231651.gif

this is one of the front rims of the km. i used the thinner 1/8" ring cause i figure i would not have so much stress on the hex like you would from the rear wheels... i used the 1/4" rings on the rear...

well, there you have it... i hope someone somewhere finds this info informative and can use it for their own rig... i would also like to thank BIGGER THE BETTER for the idea in the first place...
 
Last edited:
wheel rings

after posting i went out to the shop to check my wheels. ok, i has 5 sets of genny hpi racing wheels with tires mounted. none of them have any metal in the hub. these are 5b and ss kit wheels. so, i am going to do the mod, only on the rears. i think the fronts are ok as is due to no torsional force on them.
 
really???

after posting i went out to the shop to check my wheels. ok, i has 5 sets of genny hpi racing wheels with tires mounted. none of them have any metal in the hub. these are 5b and ss kit wheels. so, i am going to do the mod, only on the rears. i think the fronts are ok as is due to no torsional force on them.

i cant believe none of the hpi wheels you have, have no metal as the hex or the ring... the hex itself on my hpi 5bss rims have the metal hex. its black, but when i scraped it wit an exacto knife the black came off and there was a metal hex... i don't know what size pipe/tube you would need for the hpi wheels cause i did not do them... are your hpi wheels 1st generation or 2cd generation??? and i believe you are right about the front wheels. the hex does not get torqued on like the rear ones do...

glad you found this helpful... i am new to the 5th scale world so makes me feel good to know i could contribute a lil...
 
wording is off... lol

i cant believe none of the hpi wheels you have, have no metal as the hex or the ring... the hex itself on my hpi 5bss rims have the metal hex. its black, but when i scraped it wit an exacto knife the black came off and there was a metal hex... i don't know what size pipe/tube you would need for the hpi wheels cause i did not do them... are your hpi wheels 1st generation or 2cd generation??? and i believe you are right about the front wheels. the hex does not get torqued on like the rear ones do...

glad you found this helpful... i am new to the 5th scale world so makes me feel good to know i could contribute a lil...

i don't mean i don't believe you, i mean i thought all the hpi wheels had them and was in disbelief... i hope you know what i mean... lol just wanted to correct myself...
 
Great idea.
I am doing this on all my rear wheels. Seen a guy at the local race track with some huge washers on his but I like this idea better since it will add much less weight
 
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