The Classic Motorcycle

Sketchbook­Travels

Homer Knapp's Honda CB92

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Homer Knopp bought his first motorcycle from high school buddy Bud Ekins In the 1950s. This would be the first of many machines Homer owned, many of which would be specials that he created himself. Homer's engineerin­g knock wos unpreceden­ted; his wos o mind which worked naturally with mechanics. Understand­ing the discipline os o puzzle that wos easily solved. he could turn his hand to anything in order to get It working ogoin - or working better.

Adecode after this first purchase. Homer was stationed on Okinawa Island. Jopon. for the first two years of military service (1960-61) with the Ryukyus Command team. Homer didn't travel alone, os he hod his 650cc Triumph pocked up ond shipped out for use on the island. which is where he spent the majority of his two year stint. He only travelled to the mainland once or twice ond visited both the Hondo ond Meguro factories - one of his memories on visiting the Hondo factory. wos being presented with the western refreshmen­ts of a wax paper wrapped cheese sandwich ond a little bottle of CocaColo.

Much of the down time of service men wos spent on the milltoryfo­cility. with entertainm­ent o welcome break from the trials of military life. One of these entertainm­ents was racing motorcycle­s. on the base. By 1960. off-rood racing wos very popular in the US ond, coming from Colifornia. Homer had off-road riding ond competing in his blood. There wos on American-sty le TT track on the base, os well os o dirt oval. which wos raced on by both service men ond locals alike. Homer would ride his Triumph on both !rocks. but it wasn't long before he acquired o local motorcycle, to extend his Okinowon stable to two machines.

The Honda CB92 had been released a year before Homer arrived ot the base and although the model name for it wos 'Benly' (effectivel­y meaning convenient). the 125cc twin had gained a reputation for its performanc­e credential­s. due to Honda winning the Isle of Man 125cc TT team prize In 1959 using both two and four-valved twins. Even Soichiro Honda said in the Benly manual that "Primarily. essentials of the motorcycle lie In the speed ond thrill." The pressed steel frame design and leading link suspension are often quoted as being influenced by the machines of NSU. while the single overhead camshaft engines !hot Hondo used from 1957 onwards

were inspired by another Germon marque. Horex. Like many Japanese machines of the time. Honda took their cues from western manufactur­ers. but with their innovation­s ond precise engineerin­g they mode very successful motorcycle­s. So. with on already proven track record for performanc­e. Homer must hove realised the competitiv­e potential of the CB92 when he was offered a 1960 model by a fellow serviceman.

Homer began campaignin­g the CB92 on both the TT and dirt !rocks ot the base and he immediatel­y achieved results on the 125cc twin. The standard 125cc top end didn't stay on too long. os Homer acquired o set of 150cc cylinders ond pistons which he used to enter in the 200cc class, with great success. Always wanting to push onto the next thing, Homer started scavenging around the base for parts that would enable him to move up to the 250cc class. Within o derelict B-29, Homer found a pump intended for pressurisi­ng the cabin- Homer recognised Its potential os a supercharg­er. The extended p ipework needed to connect the blower up was fashioned out of a 'big pile of broken folding choirs' left behind one of the Quonset huts. To feed this new Injection system, Homer opted for a small carburetto­r made by Tillotson, a company famed for developing the first diaphragm carburetto­r, in the 1940s, wh ich enabled small. hand-held machinery to operate at any angle: it was quite a smart choice for a machine that would spend most of its time going sideways.

On the supercharg­ed 150cc CB92. Homer moved up to the 250cc class ond become unbeatable. so much so that he wos moved up to compete against the 500cc machines. where he was given more of o challenge - he did keep up though. and. on occasion. would place. Unfortunat­ely, during o later race, the timing chain foiled, causing the valves lo tangle. Homer look the engine apart and figured out the issue but never put it back together ogoln. This wos typical Homer-often quite happy with just knowing the solution, he would not be worried about carrying it out. as he would be more concerned about moving on to his next mechanical venture.

On returning to the States, Homer shipped back his Triumph along with the CB92 and the dismantled Supercharg­ed 150cc engine back. Ever the hoarder, his collection would travel with him wherever he went. After serving the rest of his service at the Nike missile base, San Pedro, California. Homer opened up a motorcycle workshop called Hollywood Motorcycle Machine in 1966. His modus operandi was that the shop would serve as base of knowledge for traditiona­l engineerin­g as he believed: "Old motorcycle­s, old cars, old books and old people should be approached with respect and understand­ing... Things can be learned from them all."

This workshop would provide a home for Homer's collection and a place where he would happily impart his knowledge and understand­ing of mechanics and engineerin­g to those that wanted to learn.

Skipping forward a few years. between 19971998 Ted Maejima used to visit Bud Ekins' shop most days. where he would often see Homer. At the time, Ted never knew about the Knapp CB92. It wasn't until a later date when a close friend of Homer's. Tim Mings. suggested that if Homer wanted to sell the CB92, Ted would be the best person to have it. Not only is Ted a good friend of Tim's, fondly referred to as 'his brother: Ted is also one of the few CB92 specialist­s in the world. Ted is now the worthy custodian of the now legendary machine - he fully respects the part it plays in Homer's legacy which extends way beyond his two years in Japan.

When Ted got the CB92, it was as Homer had left it when he stopped using it in Okinawa. The CB92 had a high seat and the exhaust pipes surprising­ly were not high level. as you would now expect from an off-road machine. Motocross was a new sport to the Japanese at the time, with the first All-Japan motocross race taking p lace in 1959. Honda did make high rise pipes a few years after Homer went back to America. but it was usual to run with the standard megaphones when Homer built it. The supercharg­ed engine is not legal for road use, and Ted wants to keep the CB92 running. so he has used a stock engine and other period parts. whilst proudly preserving the Knapp period livery. On the fuel tank. Homer wrote "Okinawa• in Kanji next to the Honda badges, which he painted over with the yellow Tori gate insignia of the Ryukyus

Command Military. Homer used this insignia on all his motorcycle­s, initially to tell people where he was from when riding outside of the base, and later used it as part of the Hollywood Motorcycle Machine logo. The Kanji on the other panels read 'Knapp Special' and

~SOcc: Back in Kanagawa, Japan, Ted now runs a motorcycle workshop (Ted's Special Motorcycle Works) specialisi­ng mostly in Hondas, with Homer's CB92 part of Ted's living stable.

Even though Homer only stayed in Okinawa for two years. his experience in this far off land clearly made an impression on him. He experience­d a land with kind and gentle people, who had respect for their elders who also had an incredible manufactur­ing history. All of this rang true for a man who was not only fascinated by mechanics and the connection­s it made with people. but he himself was a quiet. reserved, kind and compassion­ate person, who would willingly help anyone out. whether it was through a mechanical connection or not.

Homer Knapp passed away 18th December

2015.

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| JUNE 2021
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| JUNE 2021
 ??  ?? Left Top: A vlsuollsat­lon of Homer Knapp's CB92 In Its 125cc motocross configurat­ion.
Left. Bottom: Ted Maejlma's current build of the Knapp CB92. When acquired. Ted had received the CB92 In Us dirt track guise as Homer left It backIn 1962. The supercharg­ed 150cc engine Is not street legal In Ja p a n . so Ted. a CB92 expert. has put It In road trim with period stock parts. while retaining all of Homer's livery and patina.
| JUNE 2021
Top: An exploded view of Homer Knapp's supercharg­ed 150cc CB92 engine. It Is not known how the supercharg­er wcs mounted on the frame or engine. All that Is certain Is that the supercharg­er was obtained from a derelict 8-29 on the Oklnawan base. Far this Illustrati­on. a Pesco8-8 vacuum/ pressure pump has been referenced.
Special thanks to Tlm Mings. Ralph Walker and Ted Maejlma for their help with this artlcle.
Left Top: A vlsuollsat­lon of Homer Knapp's CB92 In Its 125cc motocross configurat­ion. Left. Bottom: Ted Maejlma's current build of the Knapp CB92. When acquired. Ted had received the CB92 In Us dirt track guise as Homer left It backIn 1962. The supercharg­ed 150cc engine Is not street legal In Ja p a n . so Ted. a CB92 expert. has put It In road trim with period stock parts. while retaining all of Homer's livery and patina. | JUNE 2021 Top: An exploded view of Homer Knapp's supercharg­ed 150cc CB92 engine. It Is not known how the supercharg­er wcs mounted on the frame or engine. All that Is certain Is that the supercharg­er was obtained from a derelict 8-29 on the Oklnawan base. Far this Illustrati­on. a Pesco8-8 vacuum/ pressure pump has been referenced. Special thanks to Tlm Mings. Ralph Walker and Ted Maejlma for their help with this artlcle.

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