diff --git a/src/datasources/db/cargobikeAPI.ts b/src/datasources/db/cargobikeAPI.ts
index 13bb44c..6b3ed2d 100644
--- a/src/datasources/db/cargobikeAPI.ts
+++ b/src/datasources/db/cargobikeAPI.ts
@@ -128,6 +128,7 @@ export class CargoBikeAPI extends DataSource {
             .getOne();
     }
 
+    // think this can go
     async findEquipmentJoinBikeById (id: number) {
         return await this.connection.getRepository(Equipment)
             .createQueryBuilder('equipment')
@@ -136,6 +137,14 @@ export class CargoBikeAPI extends DataSource {
             .getOne();
     }
 
+    async equipmentByCargoBikeId (offset: number, limit: number, id: number) {
+        return await this.connection.getRepository(Equipment)
+            .createQueryBuilder('equipment')
+            .select()
+            .where('equipment."cargoBikeId" = :id', { id: id })
+            .getMany();
+    }
+
     async createEquipment ({ equipment }: { equipment: any }) {
         const inserts = await this.connection.getRepository(Equipment)
             .createQueryBuilder('equipment')
@@ -150,29 +159,34 @@ export class CargoBikeAPI extends DataSource {
                 .relation(Equipment, 'cargoBike')
                 .of(equipment.id)
                 .set(equipment.cargoBikeId);
-            return this.findEquipmentJoinBikeById(inserts.identifiers[0].id);
+            // return this.findEquipmentJoinBikeById(inserts.identifiers[0].id);
         }
         return this.findEquipmentById(inserts.identifiers[0].id);
     }
 
+    async cargoBikeByEquipmentId (id: number) {
+        return (await this.connection.getRepository(Equipment)
+            .createQueryBuilder('equipment')
+            .leftJoinAndSelect('equipment.cargoBike', 'cargoBike')
+            .where('equipment.id = :id', { id: id })
+            .getOne())?.cargoBike;
+    }
+
     /**
      * Will update Equipment, crashes when id not in db or cargoBikeId not db.
      * Will return updated Equipment joined with CargoBike only if cargoBike is was set in param0
      * @param param0 struct with equipment properites
      */
     async updateEquipment ({ equipment }: { equipment: any }) {
-        console.log(equipment);
         const cargoBikeId = equipment.cargoBikeId;
         delete equipment.cargoBikeId;
-        console.log(equipment);
-        const inserts = await this.connection.getRepository(Equipment)
+        await this.connection.getRepository(Equipment)
             .createQueryBuilder('equipment')
             .update()
             .set({ ...equipment })
             .where('id = :id', { id: equipment.id })
             .returning('*')
             .execute();
-        console.log(inserts.raw[0]);
         if (cargoBikeId || cargoBikeId === null) {
             await this.connection.getRepository(Equipment)
                 .createQueryBuilder()
diff --git a/src/datasources/db/lendingstationAPI.ts b/src/datasources/db/lendingstationAPI.ts
index 7658041..dc63848 100644
--- a/src/datasources/db/lendingstationAPI.ts
+++ b/src/datasources/db/lendingstationAPI.ts
@@ -34,7 +34,6 @@ export class LendingStationAPI extends DataSource {
      * @param param0 new lendingStation
      */
     async createLendingStation ({ lendingStation }:{ lendingStation: any }) {
-        console.log(lendingStation);
         const inserts = await this.connection.manager
             .createQueryBuilder()
             .insert()
diff --git a/src/datasources/db/participantAPI.ts b/src/datasources/db/participantAPI.ts
index 9521a1a..5c4a320 100644
--- a/src/datasources/db/participantAPI.ts
+++ b/src/datasources/db/participantAPI.ts
@@ -1,5 +1,5 @@
 import { DataSource } from 'apollo-datasource';
-import { GraphQLBoolean, GraphQLError } from 'graphql';
+import { GraphQLError } from 'graphql';
 import { Connection, getConnection } from 'typeorm';
 import { CargoBike } from '../../model/CargoBike';
 import { ContactInformation } from '../../model/ContactInformation';
@@ -38,6 +38,16 @@ export class ParticipantAPI extends DataSource {
             .andWhere('engagement."participantId" = participant.id')
             .getOne()).participant;
     }
+
+    async participantByCargoBikeId (id:number) {
+        return await this.connection.getRepository(Participant)
+            .createQueryBuilder('participant')
+            .leftJoinAndSelect('participant.cargoBike', 'cargoBike')
+            .where('"cargoBike".id = :id', { id: id })
+            .andWhere('"cargoBike"."participantId" = participant.id')
+            .getOne();
+    }
+
     async engagementByParticipantId (id: number) {
         return await this.connection.getRepository(Engagement)
             .createQueryBuilder('engagement')
@@ -46,6 +56,20 @@ export class ParticipantAPI extends DataSource {
             .getOne();
     }
 
+    async engagementByCargoBikeId (offset: number, limit: number, id: number) {
+        return await this.connection.getRepository(Engagement)
+            .createQueryBuilder('engagement')
+            .select()
+            .where('engagement."cargoBikeId" = :id', {
+                id: id
+            })
+            .offset(offset)
+            .limit(limit)
+            .orderBy('engagement.from', 'DESC')
+            .addOrderBy('engagement.to', 'DESC', 'NULLS FIRST')
+            .getMany();
+    }
+
     async engagementById (id: number) {
         return await this.connection.getRepository(Engagement)
             .createQueryBuilder('engagement')
@@ -108,7 +132,7 @@ export class ParticipantAPI extends DataSource {
             .relation(Participant, 'contactInformation')
             .of(inserts.identifiers[0].id)
             .set(participant.contactInformationId);
-        return this.getParticipantById((await inserts).identifiers[0].id);
+        return this.getParticipantById(inserts.identifiers[0].id);
     }
 
     async createContactInformation (contactInformation: any) {
@@ -152,7 +176,6 @@ export class ParticipantAPI extends DataSource {
             .relation(Engagement, 'participant')
             .of(inserts.identifiers[0].id)
             .set(engagement.participantId);
-        console.log(inserts);
         return this.engagementById(inserts.identifiers[0].id);
     }
 }
diff --git a/src/resolvers/cargobikeResolver.ts b/src/resolvers/cargobikeResolver.ts
index 6383be4..590753c 100644
--- a/src/resolvers/cargobikeResolver.ts
+++ b/src/resolvers/cargobikeResolver.ts
@@ -39,6 +39,22 @@ export default {
             }
         }
     },
+    CargoBike: {
+        engagement (parent: any, { offset, limit }: { offset: number, limit: number }, { dataSources, req }: { dataSources: any, req: any }) {
+            return dataSources.participantAPI.engagementByCargoBikeId(offset, limit, parent.id);
+        },
+        coordinator (parent: any, { offset, limit }: { offset: number, limit: number }, { dataSources, req }: { dataSources: any, req: any }) {
+            dataSources.participantAPI.participantByCargoBikeId(parent.id);
+        },
+        equipment (parent: any, { offset, limit }: { offset: number, limit: number }, { dataSources, req }: { dataSources: any, req: any }) {
+            return dataSources.cargoBikeAPI.equipmentByCargoBikeId(offset, limit, parent.id);
+        }
+    },
+    Equipment: {
+        cargoBike (parent: any, __: any, { dataSources, req }: { dataSources: any, req: any }) {
+            return dataSources.cargoBikeAPI.cargoBikeByEquipmentId(parent.id);
+        }
+    },
     Mutation: {
         createCargoBike: (_: any, { cargoBike }: { cargoBike: any }, { dataSources, req }:{dataSources: any, req: any }) => {
             if (req.permissions.includes(Permission.WriteBike)) {
diff --git a/src/schema/type-defs.ts b/src/schema/type-defs.ts
index a2374f0..fdd6a1d 100644
--- a/src/schema/type-defs.ts
+++ b/src/schema/type-defs.ts
@@ -29,10 +29,9 @@ type CargoBike {
     """
     dimensionsAndLoad: DimensionsAndLoad!
     bikeEvents: [BikeEvent]
-    equipment: [Equipment]
+    equipment(offset: Int!, limit: Int!): [Equipment]
     "Refers to equipment that is not unique. See kommentierte info tabelle -> Fragen -> Frage 2"
     miscellaneousEquipment: [String]
-    chainSwaps: [ChainSwap]
     "Sticker State"
     stickerBikeNameState: StickerBikeNameState
     note: String
@@ -41,6 +40,7 @@ type CargoBike {
     insuranceData: InsuranceData!
     lendingStation: LendingStation
     taxes: Taxes
+    engagement(offset: Int!, limit: Int!): [Engagement]
     "null if not locked by other user"
     lockedBy: ID
     lockedUntil: Date